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Finding the Fourth Proportional to 534,420.65, 737,501.22 and 289,405.84

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Solution

The fourth proportional to 534,420.65, 737,501.22 and 289,405.84 is: 399,380.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,420.65 : 737,501.22 = 289,405.84 : x
  2. Step 2: Convert to fraction form
    534,420.65/737,501.22 = 289,405.84/x
  3. Step 3: Cross multiply
    534,420.65x = 737,501.22 × 289,405.84
  4. Step 4: Simplify right side
    534,420.65x = 213,437,160,075.13
  5. Step 5: Solve for x
    x = 213,437,160,075.13/534,420.65
  6. Step 6: Final answer
    x = 399,380.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.